CLIF SHOT is all about delivering great-tasting, scientifically-backed, and sustainably-produced products to performance athletes. In other words, energy food can taste great and be made from good-for-the-planet ingredients. It's that simple. CLIF SHOT Bloks are the latest nutrition option for endurance athletes. Bloks come in chewable, 33 calorie cubes, making it easy to customize and track caloric and electrolyte intake during long outings and races.